Product Details
Features and Scope:
Strength and hardenability than 30Mn high, cold plastic deformation of the cutting of medium to good, but welding is poor. Should be used after quenching and tempering treatment. For shaft. Bolt. Nuts. Screw, etc., mandrels. Gear.
Medium-sized machinery for the manufacture of bolts, nuts, levers and so on.
Chemical Composition: Carbon C: 0.32 ~ 0.40 ,Si Si: 0.17 ~ 0.37, Manganese Mn: 0.70 ~ 1.00, S S: ≤ 0.035, P P: ≤ 0.035, Chromium Cr: ≤ 0.25, Ni-Ni: ≤ 0.30 ,Copper Cu: ≤ 0.25
Mechanical Properties:
Tensile strength σb (MPa): ≥ 560 (57)
Yield strength σs (MPa): ≥ 335 (34)
Elongation δ5 (%): ≥ 18
Reduction of area ψ (%): ≥ 45
Impact energy Akv (J): ≥ 55
Impact toughness αkv (J/cm2): ≥ 69 (7)
Hardness: no heat treatment ≤ 229HB; annealed steel ≤ 197HB
Sample Size: Sample size is 25mm